<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./js/vue.js"></script>
</head>

<body>
    <div id="app">
        <!-- 2. 引用组件 -->
        <son @send="handleSend"></son>
    </div>
</body>

</html>
<script>
    new Vue({
        el: '#app',
        components: {
            //1. 定义组件
            son: {
                template: '<button @click="sendMsg">点我</button>',
                methods: {
                    methods: {
                        handleSend(msg) {
                            alert('收到子组件的数据' + msg)
                        }
                    },
                }
            }
        }
    })
</script>